gcc 4.3.0 and the direction flag

[Carl-Daniel Hailfinger]

Hi,

do we clear the x86 direction flag everywhere before and after we run
code not under our control? I'm thinking of option ROM code and initial
asm code as examples.

Regards,
Carl-Daniel

[ron minnich]

On Mon, Mar 31, 2008 at 2:18 PM, Carl-Daniel Hailfinger
 wrote:
> do we clear the x86 direction flag everywhere before and after we run
>  code not under our control? I'm thinking of option ROM code and initial
>  asm code as examples.

in v3, cld happens early. We should probably do a cld everytime we
return from the run_address function, which just made that function
non-architecture-independent.

Sigh.

ron

[Carl-Daniel Hailfinger]

On 31.03.2008 23:33, ron minnich wrote:
> On Mon, Mar 31, 2008 at 2:18 PM, Carl-Daniel Hailfinger
>  wrote:
> > do we clear the x86 direction flag everywhere before and after we run
> >  code not under our control? I'm thinking of option ROM code and initial
> >  asm code as examples.
>
> in v3, cld happens early. We should probably do a cld everytime we
> return from the run_address function, which just made that function
> non-architecture-independent.

Can we stuff that in arch/x86/ somewhere? The vm86 code is arch specific
anyway. Same for the VSA code.
x86emu should not be affected.

Regards,
Carl-Daniel